They have not measured the length of spiral drill collars and monel collars yet.
他们还没测量螺旋钻铤和无磁钻铤的长度。
Spiral drill pipe: Cold-drawn forming a blade, anneal, good toughness, and durability.
螺旋钻杆：冷拉一次成型叶片，不退火，韧性好，耐用。
The machine equipments needed has spiral drill press and drill to expand machine or diving drill press.
所需机械设备有螺旋钻孔机、钻扩机或潜水钻孔机。
Serious necking quality problems often appear when the CFG piles construction technology of long spiral drill pipe by pump pressure apply in some disturbed sensitive soil areas of Taiyuan.
长螺旋钻管内泵压CFG桩施工技术在太原部分地区扰动敏感性土中应用时，常出现严重缩径质量问题。
This paper mostly studies the spiral configuration of the country standard twist drill concretely.
本文主要对国家标准麻花钻螺旋的结构作具体分析和研究。
In the photo, the spiral striae left by the drill bit can clearly be seen in the plug of the lock.
在图片中，可以清楚地看到锁芯里的由钻头留下的螺旋状印迹。
The spiral composition of the chip flute of the twist drill has great influence on the rigidity and intensity of drill.
麻花钻切屑槽的螺旋形布局对钻头的刚度和强度有很大的影响。
When rotation speed is low, factors effecting soil delivering resistance are the soil volume carried by the vane and the spiral angle of drill.
采用两种不同螺旋角钻具对粘土进行输土实验，对比阻力结果证明了理论的正确性。
Usually there are three methods can be used to machine the spiral flute of twist drill, such as cutting, torsion, grinding.
通常普通麻花钻的螺旋槽加工有三种方式：切削加工、扭制加工和磨削加工。
Integral spiral heavy weight drill pipe is to extend the central upset of heavy weight drill pipe and to cut spiral groove on heavy weight drill pipe.
整体螺旋加重钻杆是在整体加重钻杆的中间加厚部位延长并铣削螺旋槽。
Spiral bevel gears are usually used to improve the bearing capacity of the Angle transmission gears on drill RIGS.
在钻机里常采用弧齿圆锥齿轮提高角传动齿轮承载能力。
The model includes of important characteristics of drill bit and drilling operation, i. e. sectional geometrical property of drill, spiral Angle, speed and cutting force created during drilling.
该模型包括了钻头以及钻削操作的重要特性，即钻头的截面几何特征、螺旋角、转速和钻削过程中产生的切削力。
The model includes of important characteristics of drill bit and drilling operation, i. e. sectional geometrical property of drill, spiral Angle, speed and cutting force created during drilling.
该模型包括了钻头以及钻削操作的重要特性，即钻头的截面几何特征、螺旋角、转速和钻削过程中产生的切削力。
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